EP0396256A2 - Extrusionsbeschichtetes Papier von hoher Qualität - Google Patents

Extrusionsbeschichtetes Papier von hoher Qualität Download PDF

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Publication number
EP0396256A2
EP0396256A2 EP90303576A EP90303576A EP0396256A2 EP 0396256 A2 EP0396256 A2 EP 0396256A2 EP 90303576 A EP90303576 A EP 90303576A EP 90303576 A EP90303576 A EP 90303576A EP 0396256 A2 EP0396256 A2 EP 0396256A2
Authority
EP
European Patent Office
Prior art keywords
base sheet
roller
coating
gloss
polyolefin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90303576A
Other languages
English (en)
French (fr)
Other versions
EP0396256A3 (de
Inventor
Eitan Avni
Simon Salama
Eran Turi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Camp Corp
Original Assignee
Union Camp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Camp Corp filed Critical Union Camp Corp
Publication of EP0396256A2 publication Critical patent/EP0396256A2/de
Publication of EP0396256A3 publication Critical patent/EP0396256A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/14—Printing or colouring
    • B32B38/145—Printing
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/22—Polyalkenes, e.g. polystyrene
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0064—Smoothing, polishing, making a glossy surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/12—Coating on the layer surface on paper layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene

Definitions

  • the present invention relates to a method of providing a plastic coated paper for use in high quality printing.
  • coated paper of various forms has a wide variety of uses in the paper industry, in certain applications there is a need for a high quality of coated paper.
  • quality of paper used in such printing can be assessed by the uniform and smooth nature of the coating on the paper. For example, in cases where the coating is absent in even very small microscopic amounts or dots, this will directly affect the quality of the product and in turn the accuracy of the printing thereon. Without a high quality finish on the paper, the end result of high quality printing thereon will not be achieved.
  • the present method is distinctly effective in providing high quality polymer coated paper.
  • the product of this method has a smoothness or evenness of the coating which enables high quality printing by allowing the wetting of ink in the shallower defects, and by reducing the number of missing print dots and unprinted areas. By reducing the defect or pit size and density in the coating, a much improved product is ultimately achieved.
  • the present invention accomplishes this through a combination of steps.
  • a highly smooth calendered paper sheet is subjected to extrusion coating with a polyolefin or other extrusion coating resin.
  • the combination paper and coating are then subjected to a low-friction gloss chill roll finish.
  • the surprising result of this combination is that the quality of the coated paper produced allows for a quality of printing thereon which is a substantial improvement compared to coated papers of comparable prior art processes.
  • the present invention provides for a high quality of polymer coated paper for high quality printing.
  • the smoother and more uniform the surface the better the printing quality.
  • the smaller the gaps or pits in the coating the better will be the printing on the paper.
  • the present invention accordingly seeks to provide a coated paper wherein the size of the pits in the polymer coating is less than the size of the print dot used in the printing process.
  • the density or clustering of such pit defects is reduced, which, of course, also improves the quality of the product.
  • FIG. 1 there is shown a schematic of the extrusion coating apparatus used in carrying out this invention.
  • a roll of paper sheet stock or base sheet 10 is shown.
  • the required high smoothness may be accomplished by gloss calendering, yankee drum treating, or other similar finishing.
  • the base sheet can be, for example, a natural unbleached Kraft or, more specifically, may be comprised of 60-70% hardwood furnish which is heavily calendered. No matter which base sheet is used, it must be such that it is of a highly smooth quality.
  • the use of the highly smooth base sheet contributes to a reduction in size of defects caused by the fiber surface network.
  • the next part of the process involves the application of the extrusion coating of a polyolefin 12, such as polyethylene with a melt index of 7 (i.e., Chevron 1017) or any other type suitable for the purpose.
  • a polyolefin 12 such as polyethylene with a melt index of 7 (i.e., Chevron 1017) or any other type suitable for the purpose.
  • the polyethylene was melted at 321°C and extruded at a rate of 230 m/min, with the chill rollers operating at between 10 and 13°C. It is advantageous to operate the chill rollers at a temperature below the softening temperature of the polyolefin or other coating.
  • the application or extrusion of the polyolefin 12 onto the base sheet 10 is indicated in figure 1 by element 14 and may be accomplished by a number of methods.
  • application may be that as shown in U.S. Patent No. 4,133,710; or by way of a coating head trough as shown in U.S. Patent No. 3,911,191; or even that shown in U.S. Patent No. 3,340,124.
  • the combination base sheet 10 and polyolefin 12 is then passed between a chill roller 16 and a backing roller 18.
  • the chill roller 16 should be of the low- friction gloss type which provide a finish which is between that of a smooth finish of a high gloss roller and the finish of a conventional matte finish roller.
  • a low- friction gloss roller of the type envisioned by the present invention is, for example, that made by Wilhelm Bauer GMBH, Postfach 730023 D-3000 Hannover, Germany, specifically a glossy low-friction roller Model No. 830 303 39 having a surface chrome thickness of 0.1 millimeter.
  • Such type roller has so improved the finish imparted on the coated paper as to allow for high quality printing on the surface which has not heretofore obtainable.
  • the roller is used at a temperature and pressure range such that, in combination with the calendered smooth base sheet, the coating is spread to a uniformity such that coating defects are substantially limited to printing dot size; and such that the density of the defects is greatly reduced.
  • Table A The results of the use of this type roller can be seen as follows in Table A.
  • FIGS 2A - 2C The dramatic results of the use of the low-­friction chill roller with the very smooth paper can be seen in figures 2A - 2C.
  • Figure 2C depicts the surface defects that occurred with a high gloss finish chill roller; figure 2B shows the results of a matte finish roller.
  • figure 2A shows the result of using a low-­friction gloss chill roller of the present invention. It can be seen that the printability on the coated paper produced by the present invention is vastly superior to that provided by the other two type rollers. The process using the smooth and high gloss chill rollers produced a gravure printability which was unacceptable.
  • the microtopographs shown in figures 2B - 2C illustrate these results, which are also set forth in table A.
  • the surface defects in the low-friction gloss chill rollers used with the highly smooth paper are much smaller and are acceptable within the Diamond Gardner test for missing dots which is within a process gravure of 0-10 and a microtopograph of 0-0.6 ⁇ m at 10 kg/cm2.
  • the defects that do occur are also much shallower than occurs with the other type rollers.
  • the size, depth and density of the defects will vary accordingly.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
EP19900303576 1989-04-03 1990-04-03 Extrusionsbeschichtetes Papier von hoher Qualität Withdrawn EP0396256A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/333,163 US4929474A (en) 1989-04-03 1989-04-03 Method of making high quality extrusion coated paper for quality printing
US333163 1994-11-01

Publications (2)

Publication Number Publication Date
EP0396256A2 true EP0396256A2 (de) 1990-11-07
EP0396256A3 EP0396256A3 (de) 1991-12-11

Family

ID=23301591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900303576 Withdrawn EP0396256A3 (de) 1989-04-03 1990-04-03 Extrusionsbeschichtetes Papier von hoher Qualität

Country Status (4)

Country Link
US (1) US4929474A (de)
EP (1) EP0396256A3 (de)
CA (1) CA2013618A1 (de)
FI (1) FI91983C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1146170A1 (de) * 2000-04-12 2001-10-17 Rexam Release, Inc. Strukturierte, mit Polyolefin beschichtete Substrate und Verfahren zur deren Herstellung

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3911218A1 (de) * 1989-04-07 1990-10-11 Bayer Ag Verfahren zur herstellung optisch isotroper extrusionsfolien
US5064692A (en) * 1990-02-15 1991-11-12 International Paper Company Method for producing paper products having increased gloss in which surface characteristics of a release film are imparted to coated substrates
EP0537890A1 (de) * 1991-09-25 1993-04-21 Ncr International Inc. Vorrichtung und Verfahren zur Beschichtung eines Substrats
US20020116884A1 (en) * 1996-09-18 2002-08-29 Smythe Timothy D. Drywall finishing system
GB9521276D0 (en) * 1995-10-18 1995-12-20 Wiggins Teape Group The Limite Casting paper
DE19606459A1 (de) * 1996-02-21 1997-08-28 Voith Sulzer Papiermasch Gmbh Verfahren und Vorrichtungen zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
US6120863A (en) * 1996-10-18 2000-09-19 Fort James Corporation Disposable food contact compatible microwaveable containers having at least one micronodular surface and process for their manufacture
US6533884B1 (en) 2000-11-03 2003-03-18 Printpack Illinois, Inc. Method and system for extrusion embossing
US7101587B2 (en) * 2001-07-06 2006-09-05 Kimberly-Clark Worldwide, Inc. Method for wetting and winding a substrate
US6649262B2 (en) * 2001-07-06 2003-11-18 Kimberly-Clark Worldwide, Inc. Wet roll having uniform composition distribution
US20030113458A1 (en) * 2001-12-18 2003-06-19 Kimberly Clark Worldwide, Inc. Method for increasing absorption rate of aqueous solution into a basesheet
US6866220B2 (en) 2001-12-21 2005-03-15 Kimberly-Clark Worldwide, Inc. Continuous motion coreless roll winder
US6881937B2 (en) * 2002-03-22 2005-04-19 Fort James Corporation Thermoformed food containers with enhanced rigidity
NO319190B1 (no) * 2002-05-15 2005-06-27 Knut Magne Furuheim Fremgangsmate for fremstilling av et barrieremateriale med gode gassbarriereegenskaper, og barrieremateriale oppnadd ved denne.
US20090137838A1 (en) * 2006-05-24 2009-05-28 Thomas Daly Esters with antimicrobial, bioresistant and fungal resistant properties
US7439376B2 (en) * 2002-06-26 2008-10-21 Tpat Ip Llc Esters with antimicrobial, bioresistant and fungal resistant properties
US10362768B2 (en) * 2010-01-29 2019-07-30 Société Des Products Nestlé S.A. Extruded animal litters
US8904963B2 (en) * 2010-01-29 2014-12-09 Nestec S.A. Extruded animal litters having an increased absorption rate
EP2579710A4 (de) * 2010-06-11 2014-01-01 Nestec Sa Tierstreukasten mit streutrennungsvorrichtung
CN102729675B (zh) * 2012-07-17 2014-10-15 广东乐佳印刷有限公司 一种窗式定位纸塑融合方法
WO2016101109A1 (zh) * 2014-12-22 2016-06-30 周友元 挤压转印涂布方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911180A (en) * 1971-10-15 1975-10-07 Fuji Photo Film Co Ltd Method of making a resin coated paper having a smooth surface
US4133710A (en) * 1975-01-21 1979-01-09 Cordotex Sa Method for forming a polyethylene layer on a substrate
US4222973A (en) * 1978-07-10 1980-09-16 The Mead Corporation Process for producing casting release paper and product
US4407690A (en) * 1981-03-18 1983-10-04 Du Pont Canada Inc. Process for coating webs with polyethylene

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715088A (en) * 1950-06-02 1955-08-09 Provincial Paper Ltd Method of coating paper with thermoplastic resins
US3340124A (en) * 1963-07-18 1967-09-05 Adams Paper Converting Company Method and apparatus for coating paper
US3470055A (en) * 1965-01-21 1969-09-30 Nat Distillers Chem Corp Extrusion coating method
US3911191A (en) * 1970-01-12 1975-10-07 Blandin Paper Company Coated paper products

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911180A (en) * 1971-10-15 1975-10-07 Fuji Photo Film Co Ltd Method of making a resin coated paper having a smooth surface
US4133710A (en) * 1975-01-21 1979-01-09 Cordotex Sa Method for forming a polyethylene layer on a substrate
US4222973A (en) * 1978-07-10 1980-09-16 The Mead Corporation Process for producing casting release paper and product
US4407690A (en) * 1981-03-18 1983-10-04 Du Pont Canada Inc. Process for coating webs with polyethylene

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1146170A1 (de) * 2000-04-12 2001-10-17 Rexam Release, Inc. Strukturierte, mit Polyolefin beschichtete Substrate und Verfahren zur deren Herstellung

Also Published As

Publication number Publication date
EP0396256A3 (de) 1991-12-11
CA2013618A1 (en) 1990-10-03
FI91983C (fi) 1994-09-12
FI91983B (fi) 1994-05-31
FI901673A0 (fi) 1990-04-03
US4929474A (en) 1990-05-29

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